Will the cloned piece have an option to flip it horizontally, vertically, or along an edge?
No. But thank you, think i know how to do that. I reopened issue #518. In short we could use transformation matrix. :)
Flipping the clone is useful for creating a half of a pattern
then create clone
then flip it along vertical axis
then join the flipped clone with the original to create a symmetric pattern.
This will be needed for sending patterns directly to a fabric cutter.
I cannot make joining because it is extremely hard. Detail maps position objects on drawing. And it is pretty easy to flip only object. But this will not help you if you want to join two pieces together. This will require flipping modelling objects. If it is the case why don't flip on drawing after all. I see only one reason - flipping one object instead of many.
I don't understand your comment.
I said you can flip a piece. But only through transformation. This is not real flipping. To make real transformation we must flip all objects that a piece contains. Since they copy coordinates directly from drawing it is double work. We already have flipping in Draw mode.